Products / RF Transmitters / EETX433A
◢ RF Transmitter ASIC · 433.92 MHz

EETX433A

The RF heart of your remote control — production-ready, no crystal, no SAW, no diodes.

433.92 MHz +13 dBm adjustable 1–6 keys Fixed code 1,000,000 codes SOIC‑8 SMD
◢ Specifications
Key parameters
Operating frequency433.92 MHz
Output power+13 dBm (adjustable)
Number of keys1 to 6
EncodingFixed code · 1,000,000 codes
Transmission time800 ms – 5 s
OscillatorInternal (no crystal/SAW)
ProtocolHT6P20B compatible
Production programmingNot required (ready to use)
PackageSOIC‑8 (150/50 mil), SMD
SupplyTape & reel — 4,000 pcs/reel (MOQ)
◢ Radical integration
Fewer components. Lower cost. Fewer failures.

✕ Conventional solution requires

SMD 3225 crystal (XTAL)
SMD SAW resonator
2× LL4148 diode (MiniMELF)
BAV70 dual diode (SOT‑23)

✓ With the EETX433A

Internal oscillator — no crystal and no SAW
Up to 6-key matrix — no diodes
Ready to use — no programming
Fewer BOM items · smaller board · lower cost
◢ Applications
Where the EETX433A fits in
🚪

Electronic gates

Remote controls for residential and commercial automatic gates.

🚨

Alarms

Arm/disarm residential and automotive alarms via RF.

🔑

Access control

Key fobs and transmitters for access control systems.

◢ Engineering included
Adopt the EETX433A. The engineering is on us.

For customers integrating the EETX433A into their products, Engeletron absorbs the engineering cost — from RF concept to a production-ready design.

📡

RF engineering consulting

Our RF team guides the integration of the EETX433A into your product, with guaranteed performance.

📐

Design for your enclosure

We design the transmitter to fit your product's form factor, antenna, and mechanical constraints.

📄

Complete production documentation

Schematic, PCB layout, Gerber files, and BOM — ready for your manufacturer.

🔧

Prototype manufacturing

We build a functional prototype for validation before mass production.

📶

Power testing and tuning

Output power measurement and calibration for compliance and optimal range.

Engineering cost covered by Engeletron

◢ Documentation
Downloads
📄
Datasheet EETX433A PDF · parameters and application
Application notes
🔑
Keyfob Transmitter v1.0 2–6 button handheld remote for gates and alarms
🧲
Wireless Magnetic Contact v1.1 Wireless door/window sensor — Smart and tamper modes
🚶
Wireless PIR Motion Detector v1.0 Passive infrared presence sensor — 1 or 2 elements
🚗
Automotive Headlight Transmitter v1.0 Triggers gates from the vehicle high beam — battery-free
◢ Commercial
Purchase and quotes
4.000 pcs/reel

Supplied in tape & reel; 4,000 pieces is the minimum order quantity (MOQ).

Request your quote

Send your name, company, application, and estimated volume via WhatsApp or e‑mail — our team will reply with a quote. The datasheet is available to download on this page.